Automatic steering device for flying machines.



R. M. THOMPSON.

AUTOMATIC STEERING DEVICE FOR FLYING MACHINES.

APPLIGATION FILED JUNE 29, 1910.

Patented'May 14, 1912.

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WITNESSES:

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ATTORNEY itildi'iiiilE TATE PATENT WILLIAM H. IBUELL, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO WINCHESTER REPEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

PRIMIN Gr MIXTURE.

No Drawing.

Specification of Letters Patent.

Patented May 28,1912.

Application filed It'larch 14, 1912. Serial No. 683,877.

To all whom it may concern Be it known that I, \ViLLiAM H. BUELL, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Priming Mixtures; and I do hereby declare the following to be a full, clear, and exact description of the same. V

Hy invention relates'to an improvement in that class of priming mixtures whichare known as non-fulminate or non-mercuri mixtures for the reason that they are compounded withoutthe use of fulminate of mercury which is the characteristic ingredient of all fulminate mixtures, the object of my present invention being to pro duce a non-fulminate mixture of superior character in so far as it insures the rapid and even ignition of the entire priming mass and the production of a hot and uniform tiame for the immediate and uniform ignition of the powder so that the same will be entirely ignited and consumed at the breechend of the barrel rather than progressively throughout the barrel as is often the case.

iYith these ends in view my invention consists in a non-fulminate mixture composed and compounded as hereinafter described.

In carrying out my invention, I mix together about 20% of antimony sulfid. 25% of lead sulfocyanid, of potassium chlorate, and 5%- of trinitrololuol. These several ingredients are preferably employed in substantially the proportions indicated, but the proportions may be varied as may be found necessary to secure the best results, and to take into account the ordinary trade. variations in the strength of the ingredients.

Furthermore variations in thelrlmracter of the powders with which my improved priming mixture is employed may require some corresponding adjustment of the mixture in order to secure the best results. I, do not, therefore, limit myself to the exact proport ons given for the 01 oral ingredients.

The compounding of the above ingredicuts produce a fine. grayish-brown powder which by preference is intrmlured dry into the primer cups in which it scaled by heavy pressure which results in the reduction of the powder into the form of a thin hard cake in the bottom of the cup. This calre is preferably sealed in place by the application to it of a thin film of collodion which extends over it and up into the side walls of the cup, enough of the collodion entering the cake to bind it thereto. An anvil of any approved construction is then introduced into the primer-cup in the ordinary manner as indicated in my prior Patent No. 962,888 of June 28, 1910.

In the use of my improved primer mixture in rim-fire ammunition, it is preferably wet with a suitable moistening fluid and driven by centrifugal force into the outwardly projecting annular hollow rim of the cartridgeshell. By preference it is then, covered with collodion applied so as to cover it and extend up upon the side walls of the shell as shown in my prior Patent No.

966.163 of August 2, 1910.

My improved non-fulminatepriming mixture is so homogeneous in its character and so easy of ignition that the whole mass ignites practically at the same time and produces a hot and uniform flame leaving the minimum of residue. The flame produced by it penetrates the powder and so diffuses itself therein that; the whole mass or body thereof is simultaneously ignited and burned at the breech end of the gun whereby the effect of'thc slow or progressive burningof the powder upon the barrel and upon the accuracy and eliicicncy of the aminunition is avoided. My improved nonfulminate priming mixture to amalgamate' with the brass of primers and cartridge shells, and therefore avoids the very serious objection attached to the use of all priming mixtures containing mercury in any form.

I do not limit myself, as already stated. to

the exact proportions herein given, and turper.

moreover. contains nothing a 1 2mm In testimony whereof, I have signed this specification in the presence of two subscrlbmg witnesses.

' W'ILLIAM H. BUELL.

potassium chlorate solely as an oxidizing agent, I may employ other oxidizing agents such as barium peroxid. I

5 A non-fulminate priming mixture 0e1n J posed of antimony sulfid, lead sulfocyanid, I potassium chlorateand trinitroteluol.

Vitnesses GLARA VEED, GEORGE D. SEYMOUR. 

